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I would appreciate any observations from the members of this excellent forum. I had a Viessman W-100 open vent(non combi) boiler fitted 4 weeks ago. This replaced an older condensing Vaillant open vent boiler which was very quiet. I have noticed that when the boiler fires up, on occasions but...

I had a Vaillant ecotech plus 415 condensing boiler fitted just over 2 years ago on an open vented system. i.e its not a combi. I noticed yesterday that the oven cloth that is underneath the boiler was damp so I took the mesh cover off the base of the boiler and on the front leading edge of the...

I had a Vaillant ecotech plus 415 condensing boiler fitted just over 2 years ago (yes its just out of its guarantee) on an open vented system. i.e its not a combi. I noticed today that the oven cloth that is underneath the boiler was damp so I took the mesh cover off the base of the boiler and...

Hi, I have read related posts about my problem but hence no solutions so hear goes. I have a fully pumped CH system with an indirect cylinder in the loft piped with 8mm microbore. 7 radiators in all. For the record I have just had a new Vaillant condensing boiler fitted with a replacement...